自然科学版
陕西师范大学学报(自然科学版)
专题研究
人Megalin基因四个结构域的cDNA克隆
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刘红江,郭张燕,杨章民
(陕西师范大学 生命科学学院, 陕西 西安 710062)
刘红江,女,硕士研究生,主要从事分子与细胞生物学方面的研究.
摘要:
以人肾脏组织cDNA为模板,用PCR技术克隆了编码人Megalin基因四个结构域的cDNA,并对其进行了测序.结果表明,编码人Megalin基因四个结构域的cDNA长度分别为863bp、1,008 bp、1,247 bp及1,359 bp.编码第一结构域的cDNA序列与GenBank报道的序列有99.9%的同源性,其中两个位点有差异(第457位和605位分别为C和G,而非G和A);其余三个结构域对应的基因序列与GenBank报道的序列完全相同.
关键词:
Megalin基因; 结构域; PCR; 克隆
收稿日期:
2006-09-12
中图分类号:
Q781
文献标识码:
A
文章编号:
1672-4291(2007)03-0087-04
基金项目:
Doi:
Cloning of cDNAs encoding four domains of human Megalin gene
LIU Hong-jiang, GUO Zhang-yan, YANG Zhang-min
(College of Life Science, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
To investigate the functions of the domains, cDNAs coding for the four domains of human megalin gene were cloned by PCR with cDNA from human kidney as templates and sequenced. The results showed that the lengths of the four fragments were 863bp,1008 bp, 1247 bp and 1359 bp, respectively. The sequence for the first domain shared about 99.9% similarity with that of GenBank (positions 457 and 605 are C and G, but not G and A ), while the identities of the rest three domains were completely same with that in GenBank.
KeyWords:
Megalin gene; domain; PCR; cloning